FRANKFORT, Ky. (AP) — Democratic U.S. Senate candidate Alison Lundergran Grimes is calling on President Barack Obama to approve the Keystone XL oil pipeline, joining 11 other incumbent Democrats as the party tries to keep control of the Senate this November. Grimes' statement Wednesday came on the same day a group committed to blocking the pipeline's construction announced plans to spend $500,000 setting up field offices in Kentucky to defeat U.S.